Based on this excerpt, what is the purpose of the preface?
Read this excerpt from the preface of a book on the Titanic.
On April 10, 1912, the [Titanic) left Southampton on her
maiden voyage to New York. Her cargo included a
priceless copy of the Rubaiyát of Omar Khayyam and a list
of passengers collectively worth two hundred and fifty
million dollars. On her way over she ... struck an iceberg
and went down on a cold April night. ... This is the story of
her last night
to summarize the events that his book will cover
to emphasize the wealth and luxury that was lost
to explain the personal reasons for writing the book
to define the historical period in which the events
occurred
-A Night to Remember,
Walter Lord

A

Explanation:

to summarize the events that his book will cover

sorry if its wrong it was my best guess :/

1. read the following excerpt from franklin d. roosevelt's "fireside chat 19":

on the other side of the picture, we must learn also to know that guerilla warfare against the germans in, let us say serbia or norway, us; that a successful russian offensive against the germans us; and that british successes on land or sea in any part of the world strengthen our hands.

remember always that germany and italy, regardless of any formal declaration of war, consider themselves at war with the united states at this moment just as much as they consider themselves at war with britain or russia. and germany puts all the other republics of the americas into the same category of enemies. the people of our sister republics of this hemisphere can be honored by that fact.  

the true goal we seek is far above and beyond the ugly field of battle. when we resort to force, as now we must, we are determined that this force shall be directed toward ultimate good as well as against immediate evil. we americans are not destroyers — we are builders.

analyze the effectiveness of this excerpt. how does it function within the speech as a whole? how does the structure of the excerpt to convey the speech's purpose and key points? support your argument with evidence from the speech. (10 points)